On Tue, Jul 02, 2024 at 03:56:50PM -0600, Jim Cromie wrote: > This fixes dynamic-debug support for DRM.debug, added via classmaps. > commit bb2ff6c27bc9 (drm: Disable dynamic debug as broken) > > CONFIG_DRM_USE_DYNAMIC_DEBUG=y was marked broken because drm.debug=val > was applied when drm.ko was modprobed; too early for the yet-to-load > drivers, which thus missed the enablement. My testing with > /etc/modprobe.d/ entries and modprobes with dyndbg=$querycmd options > obscured this omission. > > The fix is to replace invocations of DECLARE_DYNDBG_CLASSMAP with > DYNDBG_CLASSMAP_DEFINE for core, and DYNDBG_CLASSMAP_USE for drivers. > The distinction allows dyndbg to also handle the users properly. > > DRM is the only current classmaps user, and is not really using it, > so if you think DRM could benefit from zero-off-cost debugs based on > static-keys, please test. > > HISTORY > > 9/4/22 - ee879be38bc8..ace7c4bbb240 commited - classmaps-v1 dyndbg parts > 9/11/22 - 0406faf25fb1..16deeb8e18ca commited - classmaps-v1 drm parts > > https://lore.kernel.org/lkml/Y3XUrOGAV4I7bB3M@xxxxxxxxx/ > greg k-h says: > This should go through the drm tree now. The rest probably should also > go that way and not through my tree as well. Can't this just be defined as a coccinelle smpl patch? Must easier to read than 53 patches? Luis
